To ensure that the latest, updated version of an add-in such as the SolidWorks Task Add-in is running, you must manually upgrade the add-in.
When you upgrade a file vault to a new service pack or version, existing add-ins are not automatically updated. This is to prevent updated information in the add-ins from overwriting your customizations.
For example, you may have customized the tasks controlled by the SolidWorks Task Add-in. You can continue to use your customized tasks and not upgrade. However, you will not be able to use new task functionality and may have problems starting tasks and processing upgraded SolidWorks files.
To allow you to manually upgrade tasks, .cex files containing updates for the SWTaskAdd-in and the Convert, Design Checker, and Print tasks are copied to the C:\Program Files\SolidWorks Enterprise PDM\Default Data\ folder. You import one or more of these files to update the SWTaskAdd-in and the tasks it supports.